All Alternatives

Alternatives to onsemi MC14538BDW

onsemi MC14538BDW and its qualified second sources, compared on form, fit and function, stock, lifecycle and price — the same checks Parter runs inside a BOM.

Equivalent and substitute parts for onsemi MC14538BDW

MC14538BDW compared against its qualified second sources
MC14538BDWonsemiMC14538BDWGonsemiCD14538BM96Texas Instruments
FFF CompatibilityPins match one-to-one and use the identical SOIC-16 WB (Wide Body) package footprint.Identical physical dimensions, pitch, and packaging (SOIC-16 WB) as the original part.Operates over the exact same voltage range (3V to 18V) and matches all timing and electrical specifications.Uses a narrow SOIC-16 package (150 mil / 3.9mm width) instead of the original's wide body (295 mil / 7.5mm width), which prevents it from dropping directly onto the same PCB footprint.Narrower physical package width requiring a different land pattern.Functional pinout assignments and logic parameters are fully compatible, operating up to 18V supply limits.
AI Summary

MC14538BDW by onsemi: Monostable Multivibrator 3-18V Dual Precision.

This is the direct Lead-Free / RoHS-compliant replacement from the original manufacturer. It offers an identical electrical and physical profile, making it a seamless drop-in replacement with no redesign required.

  • True drop-in replacement with identical pinout and physical package
  • Active production status ensures long-term availability
  • Pb-free and RoHS compliant version of the obsolete original part

This is a widely available second-source option from Texas Instruments. While functionally identical, it is packaged in a narrow SOIC-16 frame, which requires a PCB footprint modification to accommodate the narrower width.

  • Industry-standard CMOS multivibrator from a highly reliable second source
  • Excellent market availability and active lifecycle status
  • Footprint modification required to transition from Wide Body SOIC-16 to Narrow SOIC-16
Lifecycle StatusObsoleteActiveActive
Market AvailabilityDiscontinuedIn stockIn stock
REACHUnknownREACHREACH
RoHSRoHSRoHSRoHS
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PartMarket availabilityLifecycleAlternatives available
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MC1413DGonsemiDiscontinuedObsolete4Alternatives availableSee Alternatives

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